Blow-out boot



Nov. 3, 1925- y 1,559,664 .1.A. BARNES l BLowiouT BOOT Filed June 16, 1925 Egeln /7 6 l www .muy

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Patented Noe. 3, 1925..

y y 1,559,664 NT- QFFIACE# JOI-IN A. BARNES, OF DALLAS, TEXAS, ASSIGNOBMTO FOWLER COMPANY, INCORPO- RATED, 0F DALLAS, TEXAS, A CQRPORATION. i v

isLoW-oU'r Boor.

Applicationv mea June 16, 1925. serial N-o. lams-i3,

.To all whom t may concern.' Y

Be it known that I, JoHN A. BARNES, `a citizen of the United States of America, residing at Dallas, inthe county of Dallas and State of Texas, have invented certain new and useful Improvements inf `Blow-Out Boots, of which the following is a specification, reference being had therein to the ac My invention relates to blow-out boots such as are used within pneumatic automobile and truck tires of the ordinary, low pressure or balloon type', tol strengthenand reinforce the tire at a poi1it"'wl1ere it has become weakened, dueto a blow-out, break, rim cut', or hole therein, and has lparticular reference to an improvedvedge 'reinforcement for the staple, eyelet, or other fastening means usually employed to hold the longitudinal edges of the yboot in attached position to maintain the boot in fixed position about the inner tube.

,t ,In various, forms of blowout boots now appearing on the market, the fastening means employed to `hold the boot in 4fixed position about the inner tube beneath the hole, rim cut, break or blowout in [the tire casing, comprisesV al plurality of mating staples or loops provided with inwardly projecting, penetrating prongs, which enter the material of the boot immediately adjacent-the opposite longitudinaledges thereof. These staples or loops are arranged in staggered relation on opposite longitudinal ledges of theboot, and are positioned to extend outwardly beyond the said edges, and, ywhen the edges are brought together about the inner tube, the series ofzloops will coact to forma closed passageway for a thong or lother strip adapted to fasten the edges of the boot together. In the use of such forms of blow-out boot-s, the boot is fastened about the deflated inner tube, andthe thong or strip passed through the coacting loops formed by the staples. i The tube and boot are then positioned within the tirefcasing with the boot beneath the hole,'cut,`orother weakened section of the casingrthe tire and tube are placed vin position on the rim; and the tube inflated to theproper degree ofpressure. During suoli inflation, the'fabric or cord material of which the tire casingy is made expands from 3 to 5 per cent, and itis at once apparent that the yblow-outboot positioned within the casing will be subfthe"material and thus jected toa like expansion. Since the .fabric or cord material of which the bootisfmade up ,isrelatively heavy,V it is apparent that f there will be an enormousjpullon the' fas- ,of the-boot, while readily noticeable in boots andV thus destroy or l, f.

*constructedV of knitted orlwoven.l fabric, Vis

especially noticeable inbo'otsmade of cord fabrics, whichv materialv "consistsfof superimposed layers of diagonally arranged cords coated and held together with, rubber. Such making blow-out boots for use kwithin the "commonly-used lcord tires, :of the 'ordina-ry, lfow'pressureor balloon types, but because of fthed diagonal arrangement of the cords,

'cord fabrics constitute the ideal material for and the ,elastic'nature ofv the .rubber em- 'ployedl tol bind the vmaterial together, the saidcord material vdoes not possess the neclessary'holding strength or powerfalong its longitudinal edges, land the f penetrating prongs, eyelets, or f other fastening lmeans soon pull( through or unravel the edges of means ineffective. Inblow-out boots of the type usually Iemployed in connectionA kwith low-pressure or balloonltires, it is essential,

becausel ofthe vcontii'iued and extraordinary flexing Vof thetlre casing and enclosed blo-wrrender' the fastening 'out boot, that the boot be madefof-relatively y thin and flexible material, usuallyy about two ply cord fabrics. suoli thin boots, theftendency' oftheedge fastening means to pull through,l` fray, outv orunravel the edges of the boot, isgreatly increased.-v 'i V v Y It is' obvious that with e A-nfobj ect rof invention is i to I,

an improved reinforcement, for the longiof which the staples, eyelets, or other fastening lmeans vmay-be lpositioned immediately adjacent the edges ofthe fabric of the, boot, yandin lwhiclrthe edges` arel materially rein- ,tudinal edges of;a blow-outboot, by means forced orfstrengtn'ened to prevent `said fasv tening means from pulling througlnunravcling, or fraying out theedges of theboot 'when thel boot issubjected to .expansive pressure (within the tire casing.

A further object of my invention is to provide an edge reinforcement for blowout boots, consisting of a strip or section of relatively tough and inelastic material eX- tending .along the longitudinal edges of the boot and secured tothe boot by stitching or other suitable means at a point remote from the edge thereof, the staples, eyelets,

or other fastening means passing through out boot showing my improved edge-reinforcing means appliedthereto, and

Fig. 2 is a fragmental perspective view through one edge of the boot, showing, on an enlarged scale,'the relative position of Vthe .reinforcing means with respect to the body of the boot,

'Referring' 'to the drawings, wherein for the 'purpose of illustration is shown a preferred embodiment of my invention, the iiumeral'ldesignates a blow-out boot, constitut'ed of va pluralityv of laminations of y'knitted or woven fabric or cord material. At 'opposite ends of the fabric, are preferably secured end flaps 2 of rubber or other suitable material, and at or near one longitudinal edge 0r side of the boot is secured a protecting strip 3 of rubber or the like which is adapted, when the boot is secured labout an inner tube, to be interposed be` tween the. said tube and the fastening means to prevent any possibility of the tube being pinched or rubbed at this point. Attached to the outer side of the lamination of fabric Acomposing the boot, is a sheet of rubber 4,

" improved `reinforcing means 'to be presently described.

My invention Vconsists in the reinforcing or strengthening strip 5, made of closely knit `or woven fabric, leather, or other relatively tough and inelastic material, secured at opposite sidesfof the boot with its outer edge fiush'with the edge of the boot. This reinforcing strip-5 is made relatively wide and is preferably attached to the upper surface 'of the boot by means of stitching 6, which stitching passes through the strip near its inneredge yand in a line or lines remote from -th'e'edge of the boot l. It is to be noted that at one -side of the boot the stitching 6 is eming strip 3, one edge of the rubber sheet et and the reinforcing strip 5, to the'fabricy body of the boot, and at the opposite side of the boot, to attach the other edge of the rubber sheet Il, and the second reinforcing strip 5.

Secured to each of the opposite longitudinal edges of the boot are a row of staples or loops 7 arranged to extend beyond the longitudinal edges of the boot, and provided at their inner ends with penetrating prongs which are driveninto the edge of the boot. It is to be noted particularly that the upper prongs of these staples or loops extend through the reinforcing strips 5, the rubber sheet 4, and into the fabric 1 of the boot. These loopsl or staples are arranged in staggered relation and, when the edges are brought together about the inner tube these coacting loops fit together to form a closed passage for a suitable locking thong or strip (not shown) by means of which the boot is maintained in position about the inner tube. While l have elected to illustrate my invention as' used vin connection with the staple or vloop fastening means, itis to be understood that eyelets or other forms of fastening means may be employed, it being only essential that such fastenling means pass through the reinforcing strips 5 and through the fabric body of the boot.

It will thus be seen that l have provided a novel and useful means for reinforcing the ledges of a blow-out boot to prevent the staples,

eyelets or other fastening means from pulling through, unravelling, or fraying outthe edge of the fabric of' which the boot is constructed. The reinforcement is usually made of double-ply, closely woven fabric, and is especially adapted for use in connection with boots made ofy cord material. The stitching being positioned at an appreciable distance from the edge of the boot, takes the pull or strain off of the immediate marginal edge of the boot and thus prevents the strain Ydue to the inflation of the tube, from pulling the fastening means free from the boot. lVere it not for this tough yand inelastic edge reinforcing str ip kthe strength of `the 'boot,

whether made of fabric or cord material,

would depend entirely upon the strength of the edge of the fabric and the ability of such edge fabric to withstand the. pull on the fastening means.. `Vfhenl it is desired toemploy the usual cord fabric for making the boot, such a reinforcement is not only desirable, but is almost .a necessity, because of the diagonal positioning o f the cords and the `location of the staples, eyelets, .or other fastening means at the eXtreme edge of the fabric. By my construction, I combine what llittle strength there is in the cord fabric, reinforce or ystrengthen it with the closely woven fabric', leather or other strip, and sew` the strip and boot together, putting the reinforcing strip on the outside, Where it gets the heaviest or greatest strain, and pass the staples, eyelets or other fastening means into and through the boot fabric and reinforcing strip to give such fastening means a firm and substantial hold or foundation.

It is to be understood'that the form of my invention herein shown and describedis to ybe taken as a preferred eXample of the same and that various changes in the construction, size and arrangement of parts may be resorted to Without departing from the spirit of the invention or the scope of Vthe subjoined claims.

I-Iaving thus described my invention, what I claim as new and desire to secure by Let# ters Patent is Y Y l. A blow-out boot comprising a body portion, reinforcing and strengthening str-ips secured at opposite sides of the body portion, and fastening means passing through said reinforcing and strengthening strips and through the body portion of the boot.

2. A blow-out boot comprising a body portion, a reinforcing andy strengthening strip positioned along the edge of the body portion with its outer edge flush with the edge of the said body portion, means for attaching said reinforcing and' strengthening strip to said body portion at a point remote from the edge of the body portion, and fastening means passing through said reinforcing and strengthening strip and through the body portion of the boot.

S. A blow-out boot comprising a body ner edge of said reinforcing and strengthening'strip tovsaid body portion at a point remotefrom the edge of the body portion, and

fastening means passing through the rein forcing and strengthening strip near its out er edge and through the cord fabric body portion near the outer edge thereof.

4. A blow-out boot comprising abody portion of cord fabric, a reinforcingA and strengthening strip. superim osed along the edge of the body portion Wit its outer edge flush With the edge of said body portion, stitching passing through the reinforcing and strengthening' strip and through the, body portion at a point remote from the edge of the body portion for attaching the strip and body portion together, and fastening means passing through said reinforcing and strengthening strip and through the body portion near the outer edge of each.

5. A blow-out boot comprising a ,body portion of cord fabric, a reinforcing and strengthening strip secured at op osite sides of the body portion near the edge thereof, said strip being made of tough inelastic material, and fastening means passing through said reinforcing and strengthening strip and through the body portion near the outer edge of each.

In testimony whereof I hereunto affix my f signature.

JOHN A. BARNES. 

